Hyatt Reston, by far and way, hands down, easily the best location for something to do within walking distance in the middle or the Town center and the most expensive hands down. When this one is $99 the rest are $69, when this one is $299, the rest are $189

Fairlakes - worst IMHO but the end rooms are ok, location sorta sucks

IAD Herndon - location not too great either unless going to IAD early, its all suites now isn't it? not sure about that

IAD Herndon Hyatt Place - generic hotel that shares a lot with the Sheraton Herndon IAD

Hyatt Place Sterling - decent location for stuff to do but its 9 miles from IAD and I think they try to bill themselves as an airport property as they do have a shuttle but it doesn't run as late as most shuttles